how to show constellation of ofdm?
recently I uesd optisystem to build a CO-OFDM system with FSO channel, but I cannot get the OSNR and the constellation.
About the OSNR, the optical power meter after the FSO channel shows the noise power equals zero.
About the constellation, I dont know how to show the constellation after the OFDM demodulator. I see someone used a subsystem to show constellation, but I dont know what the subsystem has. Is it another communication system?
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